Fastening device



W. H. LUCAS.

FASTENING DEVICE.

APPucATxoN men APR. 29. ma.

1,329,191. Patented z1311.211920.

UNTTED STATES PATENT oEEroE.

WILLIAM I-I. LUCAS, OF CLAREMORE, OKLAHOMA, ASSIGNOR OF ONE-'HALF 10 H. H.

. BROWN, OF CLAREMORE, OKLAHOMA FASTENING DEVICE.

V.Application filed April 29, 1918.

To all whom it may concern:

Be it known that I, WILLIAM H. LUCAS, a citizen of the United States, residing at Claremore, in the county of Rogers and State of Oklahoma, have invented certain new and useful improvements in Fastening Devices, of which the following is a specification.

This invention relates to improvements in plows and it is the principal object of the invention to provide a novel form of fastening device particularly adapted for use as a means for securing the shovels or` other earth working elements to the beams of plows in a manner such as will positively prevent undue disengagement of the same and yet, permit the shovel or earth working element, when desired or necessary, to be i quickly and readily removed therefrom with but little effort upon part of a user.

It is also an object of the invention to provide a fastening device of the character mentioned which will serve to an extent toprevent the bending, twisting or fracturing of a plow shovel or other earth working element engaged thereby, by permitting slight move- Yment of the same when engaged with an obstacle without liability of loosening said fastening device in any way.

The foregoing together with additional advantageous details and arrangements of parts of the preferred embodiment of my invention will be clear from the specific description hereinafter contained, when read in connection with the accompanying drawings forming part thereof, wherein said embodiment of the invention is illustrated for the purpose of facilitating a full understanding of the present improvements.

In the drawings:

Figure 1 is a fragmentary side elevation of a plow beam and shovel showing my improved fastening device applied thereto,

Fig. 2 is a fragmentary end view of the same,

Fig. 3 is a horizontal section through 'a portion of the plow beam, shovel and fastening device,

Fig. 4 is a detail of a slightly modified form of the wedging element, and

Fig. 5 is a slightly modified form of clamping arm.

Having more particular reference to the drawings, in connection with which like reference characters will refer to corresponding Specification of Letters Patent.

Patented Jan. 27, 1920.

serial No. 231,462.

parts throughout the several views of the drawings, l represents the lower extremity or foot of a plow beam, the same as will be understood, being formed of metal or other suitable material and having the curved or foot portion thereof arranged to provide spaced parallel elements, to permit the securing of aI shovel 2 or other earth working element thereto.

The improved fastening device includes a spring metal clamping arm 3, one end of which is curved and looped upon itself as at a to provide a convenient hand or linger hold, while the remaining end of the same is off-set or bent in an opposite direction as at 5 to provide an engaging element adapted to bear upon a portion of the foot of the plow beam and serve as means for spacing said clamping arm therefrom. In' the intermediate portion of the clamping arm a keyhole slot 6 is formed and serves as means for receiving the free end of a bolt 7 or similar form of tie having the outer end thereof formed with oppositely disposed notches 8, thus reducing a portion of the shank of said bolt and allowing the same to enter the reduced portion of the keyhole slot 6 subsequently to the passing of the unrecessed portion thereof through the enlarged part of said slot 6. Obviously, by passing the reducedY portion of the bolt or tie shank into the reduced portion of the keyhole slot 6, the shoulder formed thereon due to the provision of the oppositely disposed notches 8 will serve to prevent undue disengagement of the bolt from the spring clamping' arm.

, As means for locking the spring clamping arm 3 in its engagement with the bolt or tie 7 I provide a wedge element 9, forming one side thereof with a curved bearing face l() adapted to engage with the adjacent side of the plow beam, while the opposite extremities thereof are provided with hooked portions or arms l1 engageable over the spring clamping arm and serving for an obvious purpose.

In using the improved fastening device, the shovel 2 is properly positioned with relation to the foot of the plow beam 1 whereupon the bolt 7 is passed through the opening provided therefor and between the spaced portion of the beam, whereupon it is engaged in the enlarged portion of the keyhole slot 6. At this time, the looped end 4 of the spring clamping arm is engaged and pulled upwardly to cause the reduced portion of the shank of the bolt 7 to enter the reduced portion of the keyhole slot 6, thus efectually locking said bolt in position. The slidable wedge element 9 is then moved downwardly over the spring arm 3 between the same and the adjacent portion of the beam l; the curved bearing tace l() thereof serving to efectually space the adjacent portion of the clamping arm from the plow beam and as a consequence, producing a secure connection'between the clainping'arm and the reduced shank portion ot' the bolt 7 It is obvious, that with my improved fastening device, I am enabled to provide means whereby the twisting or tracturing ot a plow shovel or other element engaged thereby will be prevented to an extent, since, should the plow shovel or other element engage an obstacle, the upper portion of the same will be permitted slight move ment with relation to the means to which it is secured by reason oit' the engagement of the tie bolt 7 with the sprino clamping arm 3. Furthermore, it will be also appreciated that the device although serving as an eh'eftual and positive connection, can be readily disengaged by sliding the wedge ele- `ment 9 upwardly out of engagement with the adjacent portion oi"- the plow beam l, thus permitting free movement of Vthe clamping arm and the subsequent disengagenieiit of the bolt 7 from the keyhole slot Y 6 formed therein.

In Fig. t I have illustrated a slightly inodilied form lof wedge, designating the same by the numeral 12, said wedge having the usual hooked arm 13 formed on the opposite end thereof and corresponding to the armsll, but being provided with a projection or boss 14 upon the curved bearing face of the same, which projection or boss is adapted to be received between the spaced 4sides of the toot of a plow beam or other construction to which the fastening device is applied.

Further, I have shown in the Fig. 5 a slightly modified form of clamping arm,

wherein the oE-set'lower end 5 thereof is provided with a tongue or reduced extension l5 adapted for reception between the spaced side oi the plow beam or other construction receiving the device.

It may be here noted, that the modified forms of wedge element and spring clamping arm are particularly designed for use in connection with plows and like constructions which are subjected to considerable strain or heavy work, the projection received between the spaced side of the device to which the fasteningmeans is applied, and preventing relative movement therebetween.

Although the fastening device is primarily designed for the purpose of clamping shovels or other earth working elements to plow beams of plows of all types, it can be equally well used as a means for securing various elements to receiving devices, such 'r'or instance as securing shovels to handles, blades to handles, rake teeth to heads therefor, etc., suoli as conditions or preference may dictate. Y

As hereinbe'fore indicated, I do not wish to be understood as confining the invention to the particular embodiments chosen Jor illus ration herein, nor to the exact construction, arrangement and adaptation of parts shown and described, but I reserve the right to malte any changes and alterations that fairly fall within the spirit and scope of the claim.

I claim f.

In a device ot the class described, a supporting element, a supported element, a tie member extending through said elements, a resilient member associated with said supporting member and having its edges eX- tending in parallelV relation, means for detachably coupling said tievmember to said resilient member, a stra-inA applying device operating between said supporting member and resilient member and having guide ribsslidably engaging tl e parallel edges ot the resilient member.

In testimony whereof, I ailix my signature hereto.

wiLLniM n. Lucas., 

